Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 26 · 40 questions

The trick (Count the places): Forget the points and multiply the whole numbers. Count all the digits after the points in the question. Put the point that many places from the right, then check by rounding.

1. 1.0.86 × 3 — where does the decimal point go? (a) 0.0258 (b) 2.58 (c) 0.258 (d) 25.8
2. 2.4.8 × 6 — where does the decimal point go? (a) 28.8 (b) 288 (c) 2.88 (d) 0.288
3. 3.6.9 × 3.5 — where does the decimal point go? (a) 24.15 (b) 0.2415 (c) 2.415 (d) 241.5
4. 4.0.63 × 8 — where does the decimal point go? (a) 0.0504 (b) 0.504 (c) 5.04 (d) 50.4
5. 5.0.19 × 0.5 — where does the decimal point go? (a) 0.95 (b) 0.00095 (c) 0.0095 (d) 0.095
6. 6.4.7 × 8 — where does the decimal point go? (a) 0.376 (b) 3.76 (c) 37.6 (d) 376
7. 7.9.8 × 2.6 — where does the decimal point go? (a) 25.48 (b) 0.2548 (c) 254.8 (d) 2.548
8. 8.7.7 × 0.8 — where does the decimal point go? (a) 0.616 (b) 6.16 (c) 0.0616 (d) 61.6
9. 9.2.3 × 4.8 — where does the decimal point go? (a) 11.04 (b) 0.1104 (c) 1.104 (d) 110.4
10. 10.7.8 × 1.6 — where does the decimal point go? (a) 0.1248 (b) 12.48 (c) 1.248 (d) 124.8
11. 11.0.71 × 0.8 — where does the decimal point go? (a) 0.568 (b) 0.0568 (c) 0.00568 (d) 5.68
12. 12.0.37 × 3 — where does the decimal point go? (a) 1.11 (b) 0.111 (c) 0.0111 (d) 11.1
13. 13.0.35 × 3 — where does the decimal point go? (a) 0.105 (b) 10.5 (c) 0.0105 (d) 1.05
14. 14.2.2 × 0.3 — where does the decimal point go? (a) 0.66 (b) 0.066 (c) 6.6 (d) 0.0066
15. 15.7.6 × 8 — where does the decimal point go? (a) 6.08 (b) 0.608 (c) 60.8 (d) 608
16. 16.3.4 × 13 — where does the decimal point go? (a) 442 (b) 44.2 (c) 0.442 (d) 4.42
17. 17.0.23 × 0.3 — where does the decimal point go? (a) 0.00069 (b) 0.69 (c) 0.069 (d) 0.0069
18. 18.0.39 × 0.9 — where does the decimal point go? (a) 0.0351 (b) 0.00351 (c) 0.351 (d) 3.51
19. 19.0.13 × 1.8 — where does the decimal point go? (a) 0.0234 (b) 0.234 (c) 0.00234 (d) 2.34
20. 20.0.28 × 6 — where does the decimal point go? (a) 0.0168 (b) 1.68 (c) 0.168 (d) 16.8
21. 21.0.89 × 0.9 — where does the decimal point go? (a) 0.00801 (b) 0.801 (c) 0.0801 (d) 8.01
22. 22.7.6 × 1.9 — where does the decimal point go? (a) 144.4 (b) 0.1444 (c) 1.444 (d) 14.44
23. 23.0.61 × 5 — where does the decimal point go? (a) 3.05 (b) 0.305 (c) 30.5 (d) 0.0305
24. 24.0.45 × 17 — where does the decimal point go? (a) 7.65 (b) 0.765 (c) 0.0765 (d) 76.5
25. 25.5.7 × 2.3 — where does the decimal point go? (a) 1.311 (b) 13.11 (c) 0.1311 (d) 131.1
26. 26.8.3 × 0.8 — where does the decimal point go? (a) 0.0664 (b) 0.664 (c) 66.4 (d) 6.64
27. 27.0.27 × 32 — where does the decimal point go? (a) 0.864 (b) 8.64 (c) 0.0864 (d) 86.4
28. 28.8.9 × 8 — where does the decimal point go? (a) 712 (b) 7.12 (c) 71.2 (d) 0.712
29. 29.0.46 × 6 — where does the decimal point go? (a) 2.76 (b) 0.0276 (c) 0.276 (d) 27.6
30. 30.1.4 × 0.3 — where does the decimal point go? (a) 0.0042 (b) 4.2 (c) 0.042 (d) 0.42
31. 31.9.8 × 1.7 — where does the decimal point go? (a) 0.1666 (b) 16.66 (c) 166.6 (d) 1.666
32. 32.5.9 × 5 — where does the decimal point go? (a) 0.295 (b) 29.5 (c) 2.95 (d) 295
33. 33.0.88 × 26 — where does the decimal point go? (a) 0.2288 (b) 2.288 (c) 228.8 (d) 22.88
34. 34.0.93 × 42 — where does the decimal point go? (a) 3.906 (b) 39.06 (c) 390.6 (d) 0.3906
35. 35.7.6 × 0.4 — where does the decimal point go? (a) 30.4 (b) 0.0304 (c) 0.304 (d) 3.04
36. 36.4.1 × 0.7 — where does the decimal point go? (a) 2.87 (b) 28.7 (c) 0.287 (d) 0.0287
37. 37.5.2 × 2.2 — where does the decimal point go? (a) 11.44 (b) 114.4 (c) 0.1144 (d) 1.144
38. 38.2.9 × 15 — where does the decimal point go? (a) 4.35 (b) 435 (c) 0.435 (d) 43.5
39. 39.0.49 × 11 — where does the decimal point go? (a) 53.9 (b) 0.0539 (c) 0.539 (d) 5.39
40. 40.7.8 × 8 — where does the decimal point go? (a) 62.4 (b) 6.24 (c) 0.624 (d) 624

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